Am i allowed to sell a Blender project including the Blender installer?
Take a look at https://www.blender.org/about/license/

"Free to sell your work" seems very clear. It doesn't include Blender and it also doesn't include addons, as long as they don't use different Licensing Models. 

You may distribute blender with your work as a dependency, but you obviously may not declare it as your work.